A researcher tests whether the dosage level of some drug (low,high)causes significant differences in health.To do this,the researcher randomly assigns rat subjects to receive a low or high dosage of the drug and records health-related measures in both groups.The type of method described is
A)experimental
B)quasi-experimental
C)correlation
D)operational

Question

Quizplus · Accepted Answer

This is an experimental design as the researcher is randomly assigning subjects to different dosage levels and measuring the impact on health-related measures. The use of random assignment helps to control for potential sources of bias and strengthen the causal inference between the dosage level and health outcomes.

A Researcher Tests Whether the Dosage Level of Some Drug